Some more elaborate limits can be added to what matches using these functions:
* "`link(page)`" - match only pages that link to a given page (or glob)
-* "`tagged(tag)`" - match pages that are tagged or link to the given tag (or glob)
+* "`tagged(tag)`" - match pages that are tagged or link to the given tag (or
+ tags matched by a glob)
* "`backlink(page)`" - match only pages that a given page links to
* "`creation_month(month)`" - match only pages created on the given month
* "`creation_day(mday)`" - or day of the month